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This species is accepted, and its native range is Arizona to Colorado and N. Mexico.

[GB]
Morphology General Habit
Perennial; caespitose. Culms erect, or geniculately ascending; 80-100 cm long. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane. Leaf-blades 2-5 mm wide; light green. Leaf-blade surface scabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; 10-15 cm long. Primary panicle branches drooping. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 7-9 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 22-27 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 7-9 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 22-27 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet. Lower glume lanceolate; 0.75 length of upper glume; membranous; without keels; 2-3 -veined. Lower glume apex acuminate. Upper glume lanceolate; 0.75 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 11 mm long; chartaceous; without keel; 5-7 -veined. Lemma surface pubescent; hairy all along. Lemma apex obtuse; awned; 1 -awned. Principal lemma awn subapical; 1-4 mm long overall. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3. Ovary with a fleshy appendage above style insertion; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; hairy at apex; apex fleshy. Hilum linear.
Distribution
North America: northwest USA, southwest USA, and south-central USA.
Reference
Bromeae. Man US Gr 1997.

Native to:

Arizona, Colorado, Mexico Northeast, Mexico Northwest, New Mexico, Utah

Bromus frondosus (Shear) Wooton & Standl. appears in other Kew resources:

First published in Bull. New Mexico Agric. Exp. Sta. 81: 144 (1912)

Accepted by

  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
  • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
  • Saarela, J.M., Peterson, P.M. & Váldes-Reyna, J. (2014). A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America Phytotaxa 185(1): 1-147.

Literature

Kew Backbone Distributions

  • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
  • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
  • Saarela, J.M., Peterson, P.M. & Váldes-Reyna, J. (2014). A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America Phytotaxa 185(1): 1-147.

GrassBase - The Online World Grass Flora
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0